Epidemiology

Canada’s first human case of bird flu has left a teenager in critical condition as human infections continue to emerge in the western U.S.

Wastewater in several Californian cities, including San Francisco and Los Angeles, recently tested positive for bird flu. But understanding disease risk and exposure to humans isn’t so straightforward

“Going viral” appears to be more than just a catchphrase when it comes to the rampant spread of misinformation

Analysis of a strain of the virus circulating in Central Africa shows genetic mutations indicative of sustained human-to-human spread

Humans and pigs could both serve as mixing vessels for a bird flu–seasonal flu hybrid, posing a risk of wider spread

Pediatric long COVID is more common than many thought, and we keep letting kids be reinfected with new variants

Whooping cough, also known as pertussis, is on the rise after a lull at the beginning of the COVID pandemic

Rwanda’s health minister says authorities are tracing every potential contact of the index case in the country’s outbreak of Marburg virus disease to reduce the risk of wider spread

New research dispels the notion that human beings can continue to radically extend their lifespan

Experts call for greater testing of contacts of a person who was infected with the H5N1 bird flu strain before the virus causes a wider outbreak

Infectious disease specialists explain whether vaccines will curb the mpox outbreak that was recently declared a global health emergency

The Oropouche virus, which causes a disease nicknamed “sloth fever” for one of the animals that can be infected, has seen its first cases in the U.S.